homeserver: update README

kubernetes/media/jellyfin-deploy.yaml

@@ -88,7 +88,7 @@ spec:
         - name: jellyfin-service
           port: 8096
   tls:
-    secretName: wildcard-cert-secret
+    secretName: jellyfin-tls-secret
 
 ---
 apiVersion: traefik.io/v1alpha1
@@ -101,3 +101,16 @@ spec:
       X-Forwarded-Proto: "https"
     customResponseHeaders:
       X-Frame-Options: "SAMEORIGIN"
+
+---
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: jellyfin-cert
+spec:
+  secretName: jellyfin-tls-secret
+  issuerRef:
+    name: acme-issuer
+    kind: ClusterIssuer
+  dnsNames:
+    - ${JELLYFIN_HOST}